// Copyright (C) 2011 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 13.1
description: >
    for-in to acquire properties from object
---*/
function Test() {
    function props(x) {
      var array = [];
      for (let p in x) array.push(p);
      return array;
    }
    var subject;

    subject = props({});
    assert.sameValue(subject.length, 0, "{}: length");
    assert.sameValue(subject[0], undefined, "{}: first property");
    assert.sameValue(subject[1], undefined, "{}: second property");
    assert.sameValue(subject[2], undefined, "{}: third property");
    assert.sameValue(subject[3], undefined, "{}: fourth property");

    subject = props({x:1});
    assert.sameValue(subject.length, 1, "{x:1}: length");
    assert.sameValue(subject[0], "x", "{x:1}: first property");
    assert.sameValue(subject[1], undefined, "{x:1}: second property");
    assert.sameValue(subject[2], undefined, "{x:1}: third property");
    assert.sameValue(subject[3], undefined, "{x:1}: fourth property");

    subject = props({x:1, y:2});
    assert.sameValue(subject.length, 2, "{x:1, y:2}: length");
    assert.sameValue(subject[0], "x", "{x:1, y:2}: first property");
    assert.sameValue(subject[1], "y", "{x:1, y:2}: second property");
    assert.sameValue(subject[2], undefined, "{x:1, y:2}: third property");
    assert.sameValue(subject[3], undefined, "{x:1, y:2}: fourth property");

    subject = props({x:1, y:2, zoom:3});
    assert.sameValue(subject.length, 3, "{x:1, y:2, zoom:3}: length");
    assert.sameValue(subject[0], "x", "{x:1, y:2, zoom:3}: first property");
    assert.sameValue(subject[1], "y", "{x:1, y:2, zoom:3}: second property");
    assert.sameValue(subject[2], "zoom", "{x:1, y:2, zoom:3}: third property");
    assert.sameValue(subject[3], undefined, "{x:1, y:2, zoom:3}: fourth property");
}

// preheat
const NUMBER_OF_PREHEAT = 1;
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}

ArkTools.jitCompileAsync(Test);
assert.sameValue(ArkTools.waitJitCompileFinish(Test), true, '[JIT] JIT disabled.');

// test
const NUMBER_OF_TEST = 1; // or 2
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}
